... for building ceiling decoation Specification:Quadrate Aluminium ceiling: 300x300mm, 500x500mm, 600x600mm, Ribbon Aluminium ceiling: width100mm, 150mm, 200mm Length: 3000mm, ... resistance, alkali-resistance 3), Perforation and flatness series, different pattern designs 4), abundance dimension, easily installation and maintenance. 5 ... kindness. 6), good sound insulation feature. Aluminium ceiling panel